JP2009165968A - Cleaning method and cleaning apparatus for belt-like cleaning object - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cleaning method and a cleaning apparatus for a belt-like cleaning object not only preferably removing contamination of the belt-like cleaning object, but also preventing splashing of cleaning liquid jetted onto a placing face of the cleaning object from spaces between the placing face and a cleaning hood to the outside. <P>SOLUTION: A plurality of double cleaning nozzles NZ1 are disposed surrounded in a hood-like head cover 2 with an end closely facing the belt-like cleaning object B2 opened, jetting ports of the nozzles NZ1 are set in the axial direction orthogonal to the placing face of the belt-like cleaning object B2, and in the range of 45 to -45° in the radial direction toward the placing face in relation to the axis. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a cleaning method and a cleaning apparatus for a belt-shaped object to be cleaned, which is for cleaning the belt-shaped object by injecting a cleaning medium such as liquid or air.

  Conventionally, in a papermaking machine, for example, a paper material containing moisture that is continuously transferred on a loop-shaped dryer canvas as a belt-like object to be cleaned is pressed against the dryer cylinder by the dryer canvas and dried. It is then wound up as a product. The dirt of the dryer canvas reduces its air permeability and affects the drying speed, hindering the uniform holding of the sheet in the dryer cylinder, causing not only the sheet thickness variation but also the deterioration of the paper quality. The dry canvas is being cleaned.

  The above-mentioned dryer canvas has been conventionally cleaned with a chemical solution, but this method is difficult to clean during operation of the papermaking machine and has a sufficient cleaning effect. There wasn't. Therefore, in recent years, a cleaning method and apparatus for performing ultra-high pressure liquid injection have been proposed (see, for example, Patent Document 1).

JP 2000-70888 A

  In Patent Document 1, when cleaning the dirt on the dryer canvas by the super-high pressure liquid jet of the cleaning device, the super-high pressure liquid of 30 to 150 bar is jetted from the nozzle toward the dryer canvas, and the jet was sprayed. Dirt is removed by the physical action of the cleaning liquid.

  However, since the nozzles are installed close to each other in a direction perpendicular to the surface of the dryer canvas, a liquid stripe pattern is easily formed on the upper surface of the canvas by the liquid ejected from the nozzle at an ultrahigh pressure, and a cleaning effect is expected. Had a problem that could not. Further, since a suction gap is formed between the cleaning cup and the upper surface of the canvas, there is a problem that the cleaning liquid is likely to be scattered outside from the gap.

  The object of the present invention is not only to satisfactorily remove the dirt on the belt-like object to be cleaned, but also to allow the cleaning liquid sprayed on the surface to be cleaned to scatter to the outside through the gap between the surface to be cleaned and the cleaning hood. It is an object of the present invention to provide a cleaning method and a cleaning apparatus for a belt-like object to be cleaned without any problems.

In order to solve the above-mentioned object, a belt-shaped object to be cleaned according to claim 1 of the present invention is a belt-shaped object to be cleaned B1 that is continuously wound around a plurality of rolls R1 to R8 in a loop. In the cleaning apparatus for the belt-shaped object to be cleaned, the cleaning medium is ejected from the cleaning nozzle NZ to B5 to remove the dirt adhering to the object to be cleaned, the cleaning nozzle NZ is the belt-shaped object B1 Are arranged in a hood-like head cover 2 that is open at the front end side close to and facing B5, and the discharge ports of the cleaning nozzles NZ are mounted on the belt-like objects to be cleaned B1 to B5. An apparatus for cleaning a belt-like object to be cleaned, characterized in that it is set within a range of 45 degrees to -45 degrees in an axial direction perpendicular to the mounting surface and in a radial direction toward the mounting surface described above It is.
According to the cleaning apparatus for the belt-shaped object to be cleaned, from an angle of 45 degrees inclined in the radial direction from the discharge port of the cleaning nozzle NZ to the axis perpendicular to the mounting surface of the belt-shaped objects B1 to B5 − The cleaning medium is discharged within a range of 45 degrees. As a result, the area of the cleaning medium sprayed onto the belt-shaped objects B1 to B5 increases as compared with the area sprayed from the axial direction orthogonal to the placement surface.
Further, the cleaning medium sprayed from the discharge port of the inclined nozzle, for example, penetrates to the back of the mesh in the belt-shaped object B5 made of canvas fabric, and further, the belt-shaped object B3 made of cloth B1, B2 or blanket. In B4, it blows from the diagonal direction and penetrates to the root of the fluffy fiber.

The apparatus for cleaning a belt-shaped object to be cleaned according to claim 2 of the present invention is characterized in that the head cover 2 has a plurality of small-diameter air jets directed along the edge of the opening 4 toward the belt-shaped objects to be cleaned B1 to B5. An outlet is continuously provided, and an air exhaust port 6 is provided on the rear end side of the head cover 2, and the opening 4 is formed by an air curtain formed by air ejected from the plurality of air ejection ports. It is configured to prevent the dirt removed from the belt-shaped objects B1 to B5 and the cleaning medium sprayed onto the belt-shaped objects B1 to B5 from leaking to the outside. This is a belt-like object to be cleaned.
According to the cleaning apparatus for belt-shaped objects to be cleaned, when the belt-shaped objects B1 to B5 that are continuously running are being cleaned, the opening 4 of the head cover 2 and the belt-shaped objects to be cleaned B1 to B5 The gap is sealed with an air curtain. Thereby, the stain | pollution | contamination removed from the said belt-shaped to-be-cleaned objects B1-B5 and the washing | cleaning medium sprayed on belt-shaped to-be-cleaned objects B1-B5 are prevented from leaking outside from the said clearance gap.

According to a third aspect of the present invention, there is provided an apparatus for cleaning a belt-like object to be cleaned, wherein an air venturi 8 is provided in the vicinity of the air exhaust port 6 on the rear end side of the head cover 2 and the rear end of the air exhaust port 6 is cleaned. An air discharge port for discharging compressed air toward the rear end discharge port is provided on the inlet side of the air venturi 8, and communicates with a discharge toyo that discharges the subsequent cleaning medium to the outside. An apparatus for cleaning a belt-like object to be cleaned, wherein the cleaning medium after cleaning sucked by the negative pressure action of the air venturi 8 formed by compressed air ejected from an outlet is guided to the discharge toyo. It is.
According to the apparatus for cleaning a belt-shaped object to be cleaned, a negative pressure action is generated in the air venturi due to the compressed air ejected from the air discharge port provided on the inlet side of the air venturi 8. Thus, the cleaned cleaning medium accommodated in the head cover 2 is sucked and guided to the discharge toyo.

According to a fourth aspect of the present invention, there is provided a cleaning apparatus for a belt-shaped object to be cleaned, in the wire forming step A, the cleaning apparatuses CR1 to CR4 for cleaning the belt-shaped objects to be cleaned B1 and B2 are the cleaning nozzles NZ1. , NZ2 is composed of a plurality of cleaning media that are continuously discharged at a high pressure of 60 to 150 bar, and the cleaning media bounced into the head cover 20 from the belt-shaped objects B1 and B2 is discharged. A belt-type cleaning object cleaning device characterized in that it is configured to be guided to a toyo 22.
According to the cleaning apparatus for belt-shaped objects to be cleaned, when the cloth-shaped belt-shaped objects B1 and B2 are cleaned by the cleaning apparatuses CR1 to CR4 in the wire forming step A, a high-pressure cleaning medium of 60 to 150 bar is used. A plurality of cleaning nozzles NZ1 and NZ2 are continuously discharged.

According to a fifth aspect of the present invention, there is provided a cleaning apparatus for a belt-shaped object to be cleaned, in the pressing process B, a cleaning apparatus CR5 for cleaning the belt-shaped objects to be cleaned B3 and B4. The cleaning medium discharged from the outlet is composed of a plurality of mediums that are continuously discharged at an intermediate pressure of 15 to 60 bar. The cleaning medium bounced into the head cover 20 from the belt-like objects B3 and B4 made of blanket is discharged to the above-mentioned discharge toy. 22 is a belt-type cleaning object cleaning device.
According to the cleaning apparatus for belt-shaped objects to be cleaned, when the blanket belt-shaped objects to be cleaned B3 and B4 are cleaned by the cleaning apparatus CR5 in the pressing process, there are a plurality of medium pressure cleaning media of 15 to 60 bar. Continuous discharge from the cleaning nozzle.

The cleaning device for a belt-like object to be cleaned according to claim 6 of the present invention is the cleaning device second canvas cleaner CR6b for cleaning the belt-like material to be cleaned B5 made of canvas fabric in the dryer process C. NZ is composed of a plurality of cleaning nozzles NZ6a in which the cleaning medium discharged from the discharge ports is continuously discharged at an ultrahigh pressure of 80 to 350 bar, and a plurality of intermittent cleaning nozzles NZ6b which are intermittently discharged. A cleaning apparatus for a belt-shaped object to be cleaned, characterized in that the cleaning medium bounced into the head cover 20 from the belt-shaped object B5 made of canvas fabric is guided to the discharge toyo 26.
According to the apparatus for cleaning a belt-like object to be cleaned, when a belt-like object to be cleaned made of canvas fabric is cleaned by the cleaning device CR6a in the dryer process, an ultrahigh-pressure cleaning medium of 80 to 350 bar has a plurality of cleaning nozzles. Is continuously discharged.

  According to a seventh aspect of the present invention, there is provided a method for cleaning a belt-shaped object to be cleaned, wherein the belt-shaped objects B1 to B5 continuously wound around a plurality of rolls R1 to R8 are washed from a cleaning nozzle NZ. In the method for cleaning a belt-like object to be cleaned, which is caused by ejecting a medium to remove the dirt adhering to the objects to be cleaned B1 to B5, the front end side close to the belt-like object to be cleaned B1 to B5 is opened. The discharge ports of the plurality of cleaning nozzles NZ surrounded by the hood-shaped head cover 2 are arranged in an axial direction perpendicular to the placement surface of the belt-shaped objects to be cleaned B1 to B5, and in a radial direction with respect to the axis. The head cover 2 is set within a range of 45 ° to −45 °, and a plurality of small-diameter air jets facing the belt-like object to be cleaned are continuously provided along the edge of the opening 4. Multiple cleaning nozzles The dirt that is removed from the belt-like objects B1 to B5 and accommodated in the head cover 2 by the cleaning medium ejected from each discharge port of Z and the jetted cleaning medium are ejected from the air ejection port. The air curtain formed by the air seals the gap between the opening 4 and the belt-like objects B1 to B5, and the suction action of the air venturi 8 provided at the air exhaust port on the rear end side of the head cover 2. In this method, the belt-shaped object to be cleaned is discharged to the discharge Toyo through the air exhaust port.

  The present invention has the following effects.

  According to the first aspect of the present invention, the cleaning medium is discharged within an angle range of 45 ° to −45 ° inclined in a radial direction with respect to an axis perpendicular to the mounting surface of the belt-shaped object to be cleaned. The area of the cleaning medium sprayed onto the belt-shaped object to be cleaned increases as compared with the area sprayed from the axial direction orthogonal to the placement surface. Thereby, for example, in the belt-like object to be cleaned made of canvas fabric, it penetrates to the back of the mesh, and in the belt-like object to be washed made of cloth or blanket, it penetrates from the oblique lateral direction and penetrates to the back of the fluffy fibers, Not only the surface of the belt-like object to be cleaned but also dirt adhered to the back of the fiber can be peeled off.

  According to the second aspect of the present invention, since the gap between the opening of the head cover and the belt-shaped object to be cleaned is sealed by the air curtain, the dirt removed from the belt-shaped object and the belt-shaped object to be cleaned The sprayed cleaning medium does not leak to the outside through the gap, and does not adhere to the belt-shaped object to be cleaned again.

  According to the third aspect of the invention, by supplying a part of the compressed air used for the air curtain to the air venturi, after the head cover is cleaned by the negative pressure generated in the air venturi without using a separate vacuum. The cleaning medium can be sucked and guided to the discharge Toyo.

  According to the fourth aspect of the present invention, when a cloth belt-shaped object to be cleaned is cleaned in the wire forming process, a high-pressure cleaning medium of 60 to 150 bar is placed on the belt-shaped object to be cleaned from a plurality of cleaning nozzles. Since it is continuously discharged within an angle range of 45 ° to −45 ° inclined in the radial direction with respect to an axis perpendicular to the surface, it is possible to clean a belt-like object to be cleaned that has a high moisture content and a thin layer on the surface. it can.

  According to the fifth aspect of the present invention, when cleaning the belt-like object to be cleaned made of blanket in the pressing step, the medium-pressure cleaning medium of 15 to 60 bar loads the belt-like object to be cleaned from the plurality of cleaning nozzles. Since the ink is continuously discharged within an angle range of 45 ° to −45 ° inclined in the radial direction with respect to the axis perpendicular to the placement surface, the belt-like object to be cleaned made of blanket can be cleaned.

  According to the sixth aspect of the present invention, when washing the canvas-like object to be washed made of canvas fabric in the dryer process, an ultrahigh-pressure washing medium of 80 to 350 bar is fed from the plurality of washing nozzles to the belt-like object to be washed. Since the ink is continuously discharged within an angle range of 45 degrees to -45 degrees inclined in the radial direction with respect to the axis perpendicular to the mounting surface, dirt that is slightly dry or sticky dirt can be removed.

According to the invention described in claim 7, since the cleaning medium is discharged within a range of 45 degrees to −45 degrees inclined in a radial direction with respect to an axis perpendicular to the mounting surface of the belt-shaped object to be cleaned, The area of the cleaning medium sprayed onto the belt-shaped object to be cleaned increases as compared with the area sprayed from the axial direction orthogonal to the placement surface. As a result, for example, in a belt-like object to be washed made of canvas fabric, it penetrates to the back of the mesh, and in a belt-like article to be washed made of cloth or blanket, it penetrates from the diagonally lateral direction and penetrates to the back of the fluffy fibers. Not only the surface of the object to be cleaned but also dirt adhered to the back of the fiber can be peeled off.
In addition, since the gap between the opening and the belt-shaped object to be cleaned is sealed by the air curtain, the cleaning medium after cleaning does not leak to the outside from the gap and does not adhere to the belt-shaped object again. Further, the cleaning medium after cleaning in the head cover can be sucked and guided to the discharge toyo by the negative pressure action generated in the air venturi.

  One embodiment of the present invention will be described below.

  1 to 3 show an embodiment of a cleaning apparatus for a belt-like object to be cleaned. FIG. 1 is an overall view of a cleaning apparatus for performing a wire forming molding process as an embodiment of a cleaning apparatus for a belt-shaped object to be cleaned according to the present invention, and FIG. 2 is an example of a cleaning apparatus for a belt-shaped object to be cleaned according to the present invention. FIG. 3 is an overall view of a cleaning apparatus for carrying out a dryer process as an embodiment of a cleaning apparatus for a belt-like object to be cleaned according to the present invention.

  In the papermaking process, the sheet-like stock containing moisture is pressed against a dryer cylinder, for example, on a loop-shaped dryer canvas, dried, and then wound up as a product. Contamination of the canvas reduces the air permeability and affects the drying speed, which not only prevents the sheet material from being held uniformly in the dryer cylinder, but also causes variations in the sheet thickness. Since the heat transfer from the sheet to the sheet becomes uneven and the quality of the paper is deteriorated, the cleaning of the belt-shaped object to be cleaned is an indispensable process.

  The apparatus for cleaning a belt-shaped object to be cleaned shown in FIGS. 1 to 3 is an apparatus mainly for cleaning a belt-shaped object to be cleaned of a papermaking machine, and the cleaning process is a belt-shaped object to be cleaned. Can be classified into wire forming molding process A, press process B, and dryer process C.

  First, it attaches to wire forming shaping | molding process A and demonstrates with reference to FIG. The wire forming molding process A cleaning device shown in FIG. 1 is a top belt to be cleaned composed of a wide cloth belt looped around a plurality of rollers between a bottom drive roll R1 and a top return roll R2. The article B1 and the bottom belt to-be-cleaned object B2 configured by a wide cloth belt looped around a plurality of rollers between the bottom drive roll R3 and the bottom return roll R4.

  Between the top belt to-be-washed object B1 and the bottom belt to-be-washed object B2, there is provided a compression process in which the to-be-washed objects B1 and B2 are pressed against each other on the bottom return roll R4.

  A top power cleaner (cleaning device) CR1 for cleaning the top belt object B1 is disposed on the downstream side of the top belt roll B2 of the top belt object B1, and on the downstream side in the vicinity of the bottom drive roll R2. A bottom power cleaner (cleaning device) CR2 is provided.

  Further, a bottom power cleaner (cleaning device) CR3 for cleaning the bottom belt object to be cleaned B2 is disposed on the downstream side of the bottom drive roll R3 of the bottom belt object to be cleaned B2. The top power cleaner CR1, the bottom power cleaner CR2, and the bottom power cleaner CR3 reciprocate at a speed of 25 mm / sec to 50 mm / sec in the width direction (direction orthogonal to the traveling direction) of the belt objects B1 and B2. It is configured to traverse.

  Hereinafter, the cleaning device used in the wire forming molding step A will be described with reference to FIGS. 4 and 5. FIG. 4 is a side view of a cleaning device used for cleaning cloth belt-like objects to be cleaned, and FIG. 5 is a cross-sectional view of an air venturi provided at the head cover air exhaust port of the cleaning device, showing the X part of FIG. .

  A bottom power cleaner (cleaning device) CR3 shown in FIG. 4 has the same configuration as the bottom power cleaner CR2. 4 and 5, the bottom power cleaner CR3 is disposed so as to be surrounded by the hood-like head cover 2 having an open front end side that is close to and opposed to the bottom belt object to be cleaned B2 that continuously travels. A plurality of cleaning nozzles NZ1 for injecting a cleaning medium to the bottom belt object to be cleaned B2 and the bottom belt object to be cleaned B2 disposed along the edge of the opening 4 formed in the rectangular shape of the head cover 2 The air supply pipe 5 in which a plurality of small-diameter air outlets (not shown) are continuously arranged so that compressed air is ejected toward the head, and the air venturi device 8 provided in the vicinity of the air exhaust port 6 on the rear end side of the head cover 2. Has been.

  As for the cleaning nozzles NZ1 of the bottom power cleaners CR2 and CR3, 21 nozzles (3 rows × 7 nozzles) are arranged 50 mm apart from the bottom belt object to be cleaned B2, and the bottom nozzles NK1 are arranged from the discharge ports to the bottom. 3 to 6 liters from a diameter of 0.1 to 0.5 mm in three directions within an angle range of 45 degrees to -45 degrees inclined in the radial direction with respect to an axis perpendicular to the surface on which the belt object B2 is placed. The cleaning medium is discharged at a high pressure of 60 to 150 bar.

  Further, the rectangular air supply pipe 5 disposed along the opening 4 has two arcuate curved portions of the bottom belt to-be-cleaned object B2 wound around the outer periphery of the bottom drive roll R3 or an axis perpendicular thereto. Two linear portions in the direction are arranged close to the bottom belt object B2 at an interval of 10 to 35 mm.

The air supply pipe 5 on the downstream side of the bottom belt to-be-washed object B2 is composed of double air supply pipes 5 arranged in parallel, and a compression of 6 bar is provided from a plurality of air jet holes drilled in the air supply pipe 5. Air 1.5 to 2.5 m ³ / min is ejected toward the bottom belt object B2, and an air curtain is formed in the gap between the opening 4 and the bottom belt object B2 by the compressed air that is ejected. It has come to be.

  According to the top power cleaner CR1 and the bottom power cleaners CR2 and CR3 configured as described above, an angle of 45 ° to −45 ° inclined in a radial direction with respect to an axis perpendicular to the mounting surface of the bottom belt object B2 to be cleaned. In this range, the cleaning medium is discharged from 21 cleaning nozzles NZ1 facing in three directions, so that the area of the cleaning medium sprayed onto the bottom belt cleaning object B2 is orthogonal to the placement surface. It increases compared to the area sprayed from the axial direction.

  Accordingly, for example, in the cloth bottom belt to-be-washed object B2, since it is blown from an oblique lateral direction and penetrates to the back of the fluffy fiber, the dirt attached to the back of the fiber is not limited to the surface of the bottom-belt to-be-washed object B2. can do.

  Further, since the gap between the opening 4 of the head cover head cover 2 and the bottom belt object B2 is sealed by an air curtain, the dirt removed from the bottom belt object B2 and the bottom belt object B2 are sprayed. Thus, the cleaning medium does not leak to the outside through the gap and does not adhere again to the bottom belt object B2.

  As shown in FIG. 5, an air venturi 8 is provided in the vicinity of the air exhaust port 6 on the rear end side of the head cover 2, and the rear end of the air exhaust port 6 discharges the cleaning medium after cleaning to the outside. (To be described later).

  The air venturi 8 is composed of a cylindrical socket 10 screwed into the air exhaust port 6 and a small-diameter discharge pipe 12 inserted into the tip of the socket 10. A compressed air outlet 14 is formed through which a part of the compressed air used for the curtain is ejected.

  Due to the negative pressure action of the air venturi 8 formed by the compressed air ejected from the compressed air outlet 14, the cleaned cleaning medium accommodated in the head cover 2 is in the width direction of the bottom belt object B 2 (running) After being discharged to the discharge toyo provided in the direction orthogonal to the direction), it is discharged to the outside.

  In this way, by supplying a part of the compressed air used for the air curtain to the air venturi 8, after the head cover 2 is cleaned by the negative pressure generated in the air venturi 8 without using a separate vacuum. The cleaning medium can be directed to the discharge Toyo.

  Further, the top power cleaner CR1 shown in FIG. 1 is disposed on the upper surface of the top return roll R2, but has substantially the same configuration as the bottom power cleaners CR2 and CR3, and has a diameter of 0.1 to 1.0 mm. The only difference is that 3 to 6 liters of cleaning medium is discharged at an intermediate pressure of 60 to 150 bar.

  Next, as a cleaning device used in the wire forming molding step A, a penetrating bottom power cleaner CR4 will be described with reference to FIG. FIG. 6 is a side view of a cleaning device used for cleaning cloth belt-like objects to be cleaned. Note that the same components as those of the above-described cleaning apparatus are denoted by the same reference numerals and description thereof is omitted.

  The cleaning apparatus shown in FIG. 6 is a through-type bottom power cleaner CR4, and this through-type bottom power cleaner CR4 is an opening of the head cover 2 that faces the flat surface on the bottom surface of the bottom belt object B2 that continuously runs. A flat rectangular frame-shaped air supply pipe 15 having small-diameter air jets connected to the four end edges is disposed close to the head cover 2, and is substantially the same as the cleaning nozzle NZ1 of the bottom power cleaner CR3. A cleaning nozzle NZ2 having the same configuration is provided.

  An air supply pipe 16 having the same configuration as that of the air supply pipe 15 is attached around the air exhaust opening 6 on the rear end side of the head cover 2. The air supply pipe 16 is compressed air toward the outlet of the air exhaust opening 6. A plurality of small-diameter air jets (not shown) are continuously connected, and a tapered exhaust cylinder 18 having an air venturi function is provided on the outlet side of the air exhaust port 6. This bottom power cleaner CR4 has the same function and effect as the bottom power cleaners CR2 and CR3, and redundant description is omitted.

  Next, the pressing process B will be described with reference to FIGS. FIG. 7 is a side view of a cleaning device used for cleaning a belt-shaped object to be cleaned made of a blanket. Note that the same components as those of the cleaning apparatus are denoted by the same reference numerals and description thereof is omitted.

  The cleaning apparatus of the press process B shown in FIG. 2 includes a wide blanket top belt to-be-cleaned object B3 looped between a bottom drive roll R5 and a top return roll R6 via a plurality of rollers, and a bottom drive. It consists of a wide blanket bottom belt to-be-cleaned object B4 that is looped around a plurality of rollers between a roll R7 and a bottom return roll R8.

  Between the top belt to-be-cleaned object B3 and the bottom-belt to-be-cleaned object B4, there is provided a compression process in which both the belt to-be-cleaned objects B3 and B4 are pressed against each other on the downstream side of the bottom drive roll R5 and the bottom return roll R8. .

  A top cleaner (cleaning device) CR5 for cleaning the top belt object to be cleaned B3 is disposed on the upstream side of the top belt object to be cleaned B3 in the vicinity of the top return roll R6, and on the downstream side in the vicinity of the bottom drive roll R7. Is provided with a bottom cleaner CR5 having the same configuration as the top cleaner CR5 (hereinafter, both are referred to as a blanket cleaning cleaner CR5).

  Next, the cleaning apparatus used in the pressing step B will be described with reference to FIG. In FIG. 7, a cleaning cleaner CR5 dedicated to a blanket as a cleaning device includes a hood-like head cover 20 having an open front end that is close to and opposite to the placement surface facing the lower side of the continuously running top belt object B3. A plurality of cleaning nozzles NZ3 which are disposed so as to be surrounded by the head cover 20 and inject a cleaning medium onto the mounting surface of the top belt object to be cleaned B3, and an edge of the flat opening 4 formed in the rectangular shape of the head cover 20 The air supply pipe 15 is provided on the rear end side of the head cover 20 and the air supply pipe 15 is provided with a plurality of small-diameter air jets (not shown) connected to the top belt to-be-cleaned object B3. It consists of an air exhaust port 6.

  The cleaning nozzle NZ3 of the blanket cleaning cleaner CR5 has three directions within an angle range of 45 ° to −45 ° inclined in a radial direction with respect to an axis perpendicular to the mounting surface of the top belt cleaning object B4 from the discharge port. The cleaning nozzle NZ3 is configured so that 1.4 to 3.5 liters of cleaning medium can be discharged at a medium pressure of 15 to 60 bar from a diameter of 0.2 mm. ing.

  A downwardly-facing air exhaust port 6 formed on the rear end side of the head cover 20 is connected in communication with a discharge toyo 22 provided in the width direction (direction orthogonal to the traveling direction) of the top belt cleaning object B4. In the discharge toyo 22, a scraper 24 that is movable in the longitudinal direction is disposed together with a cleaning cleaner CR 5 dedicated to a blanket.

  According to the blanket cleaning cleaner CR5 configured as described above, when cleaning a blanket belt-like object to be cleaned in the pressing step, a medium-pressure cleaning medium of 15 to 60 bar is continuously discharged from a plurality of cleaning nozzles. Therefore, it is possible to obtain the cleaning effect of the belt-like object to be cleaned made of blanket with much moisture.

  Next, the dryer process C will be described with reference to FIGS. 3, 8, and 9. FIG. The cleaning device of the dryer process C shown in FIG. 3 is a canvas fabric such as a wide non-woven fabric, food, and building material conveyor that is looped between a driving roll R7 and a return roll R8 via a plurality of roller groups R10. It is comprised from the canvas belt to-be-cleaned object B5 comprised.

  A canvas cleaning device CR6 for cleaning the canvas belt cleaning object B5 is disposed on the roller R9 disposed on the downstream side of the driving roll R7 of the canvas belt cleaning object B5.

  Hereinafter, the cleaning device used in the dryer process C will be described with reference to FIGS. 8 and 9 to 12. FIG. 8 is a side view of a canvas cleaning apparatus used for cleaning a canvas belt object to be cleaned, and FIG. 9 is a side view of a through-type canvas cleaning apparatus used for cleaning a canvas belt object to be cleaned.

  The canvas cleaning device CR6 used as the cleaning device in the dryer process C includes a first canvas cleaner CR6a and a second canvas cleaner CR6b. In the present embodiment, the first canvas cleaner CR6a will be described.

  In FIG. 8, the first canvas cleaner CR6a is disposed so as to be surrounded by the hood-like head cover 20 having an open front end side that is close to and opposite to the canvas belt to-be-cleaned object B5 that is continuously running, and is surrounded by the head cover 20. A plurality of cleaning nozzles NZ4 for injecting a cleaning medium onto the belt-made object to be cleaned B5, and an edge of the opening 4 formed in the rectangular shape of the head cover 20 are arranged along the edge of the canvas belt-to-be-cleaned object B5. An air supply pipe 15 provided with a plurality of small-diameter air jets (not shown) for jetting compressed air toward the head, and an air venturi device 8 provided near the air exhaust port 6 on the rear end side of the head cover 20; It is composed of

  The cleaning nozzle NZ4 of the first canvas cleaner CR6a has two to six high-pressure cleaning nozzles NZ4a facing from the discharge port to the axis perpendicular to the placement surface of the canvas belt object B5, that is, toward the center of the roller R9. 8 to 12 medium-pressure cleaning nozzles NZ4b.

  The high-pressure cleaning nozzle NZ4a has a cleaning medium of 0.8 to 3 liter / min continuously discharged at an ultra-high pressure of 80 to 350 bar from a diameter of 0.1 to 0.3 mm, and is upstream of the high-pressure cleaning nozzle NZ4a. The medium pressure cleaning nozzle NZ4b arranged side by side intermittently discharges a medium pressure cleaning medium at a medium pressure of 25 to 30 liters / min from a diameter of 0.8 mm at a medium pressure of 30 to 80 bar. It is configured to perform intermittent vibration discharge (batch discharge).

  The hood-like head cover 20 surrounding the high-pressure cleaning nozzle NZ4a and the intermediate-pressure cleaning nozzle NZ4b is provided with a rectangular air supply pipe 15 along the opening 4, and the air supply pipe 15 is provided with a roller R9. Two curved arc portions of the canvas belt to-be-washed object B5 wound around the outer periphery of the canvas, or two axial straight portions perpendicular to the curved arc-shaped parts are arranged close to the canvas belt to-be-washed object B5, The supply pipe 15 is formed with a certain gap with respect to the canvas belt object B5.

The air supply pipe 15 is arranged in parallel on the downstream side of the canvas belt to-be-cleaned object B5, and 6 bar compressed air 1.5 to 2.5 m ³ / min is supplied from the air outlet of the air supply pipe 5. An air curtain is formed in the gap between the opening 4 and the canvas belt object to be cleaned B5 by the compressed air ejected toward the canvas belt object to be cleaned B5.

  In FIG. 9, CR7 indicates a through-type canvas cleaner serving as a through-type canvas cleaning device used for cleaning the canvas belt to-be-washed object. This through-type canvas cleaner CR7 is a continuously running canvas belt undercover. A hood-like head cover 20 having an opening at the front end that is located close to the object to be cleaned B5 and two to six that are disposed so as to be surrounded by the head cover 20 and inject a cleaning medium onto the canvas belt object to be cleaned B5. High-pressure cleaning nozzle NZ5a, eight medium-pressure cleaning nozzles NZ5b disposed upstream of the high-pressure cleaning nozzle NZ5a, and the canvas belt disposed along the edge of the rectangular opening 4 of the head cover 20. An air supply pipe 15 provided with a plurality of small-diameter air jets (not shown) for jetting compressed air toward the object to be cleaned B5, and the head cover 2 An air venturi device 8 installed in the vicinity of the air exhaust port 6 on the rear end side, and a discharge toy 30 for containing a cleaning medium which is injected from the plurality of cleaning nozzles NZ5 and penetrates the canvas belt object B5. It is composed of

  The high pressure cleaning nozzle NZ5a discharges a cleaning medium having a diameter of 0.1 to 0.5 mm to 80 to 350 bar, and the medium pressure cleaning nozzle NZ5b has a cleaning medium having a diameter of 0.1 to 1.0 mm to 60 to 80 bar. Discharged.

  An air venturi device 8 is attached to the air exhaust port 6 on the rear end side of the hood-like head cover 20 similarly to the canvas cleaning device CR6 shown in FIG. 8, and a mist box 28 is provided at the outlet of the air venturi device 8. It is connected. The mist box 28 is configured to be able to reciprocate (traverse) in the width direction of the canvas belt to-be-cleaned object B5 together with the through-type canvas cleaner CR7 in the discharge toyo 26.

  The second canvas cleaner CR6b, which is a cleaning device used in the dryer process C configured as described above, has substantially the same configuration as the first canvas cleaner CR6a, and the head cover 20 includes the air venturi device 8. However, the cleaning of the canvas belt to-be-cleaned object B5 is effective when a small amount of dirt is dry like the first canvas cleaner CR6a, but is effective when the dirt is sticky.

  Next, as a canvas cleaning device CR6 of the cleaning device used in the dryer process C, the first canvas cleaner CR6a will be described with reference to FIGS. 10 is a perspective view of the first canvas cleaner, FIG. 11 is a partial perspective view showing a state in which the first canvas cleaner reciprocates in the width direction of the canvas belt object to be cleaned during cleaning, and FIG. 12 is a canvas belt cover at the time of cleaning. It is a side view which shows the relationship between the 1st canvas cleaner which reciprocates in the width direction of a washing | cleaning thing, and discharge | emission Toyo. In addition, the same components as the components of the above-described cleaning apparatus are denoted by the same reference numerals and description thereof is omitted.

  In FIG. 10, the first canvas cleaner CR6a has 2 to 6 high-pressure cleaning nozzles NZ6a disposed above the inside of the head cover 20, and 3 rows × 4 (12) medium-pressure cleaning below them. The nozzle NZ6b is disposed so as to be surrounded by the head cover 20.

  When cleaning the first canvas cleaner CR6a, a maximum of 350 bar of cleaning medium is continuously discharged from the high pressure cleaning nozzle NZ6a, and at the same time, from the three rows of discharge ports of the intermediate pressure cleaning nozzle NZ6b, A cleaning medium of a maximum of 80 bar is intermittently discharged in the radial direction within a range of 45 ° to −45 ° toward the placement surface described above with respect to the axial direction perpendicular to the placement surface.

In this state, the first canvas cleaner CR6a is driven by a drive source (for example, a motor) in the width direction (direction perpendicular to the traveling direction) of the belt cleaning object B5 while the canvas belt cleaning object B5 continuously travels. It is guided by the guide rail 32 by the action of the cylinder, etc., and is cleaned while reciprocating (traverse) at a speed of 25 mm / sec to 50 mm / sec. During this time, it is compressed from the air outlet of the air supply pipe 5 to 6 kg / cm ² . Air 1.5 to 2.5 m ³ / min is ejected toward the canvas belt object to be cleaned B 5, and the air curtain is formed in the gap between the opening 4 and the canvas belt object to be cleaned B 5 by the compressed air thus ejected. Is formed.

  As a result, the gap between the opening 4 of the head cover head cover 20 and the canvas belt object to be cleaned B5 is sealed by the air curtain, so that the dirt removed from the canvas belt object to be cleaned B5 and the canvas belt object to be cleaned are removed. The cleaning medium sprayed on the object B5 does not leak to the outside through the gap, and does not adhere again to the canvas belt object B5.

  Next, the cleaning method will be described with reference to FIGS. FIG. 13 is an explanatory view of a method for cleaning a cloth belt object to be cleaned, and FIG. 14 is an explanatory diagram of a method for cleaning a canvas belt object to be cleaned.

  As shown in FIG. 13, the cleaning medium is moved from the nozzle to the axial direction perpendicular to the surface on which the belt object is mounted, and within the range of 45 ° to −45 ° toward the mounting surface with respect to the axis. In the case of the cloth belt objects to be cleaned B1 and B2, the cloth belt objects to be cleaned B1 are blown from the oblique lateral direction and penetrate into the back of the fluffy fibers as indicated by arrows. Not only the surface of B2, but also the dirt attached to the back of the fiber can be peeled off.

  Further, as shown in FIG. 14, even in the case of a canvas belt-to-be-cleaned object B5, as shown by the arrows, the cleaning medium is perpendicular to the placement surface of the canvas-to-be-cleaned object B5 from the nozzle, and the axis line. In contrast, a small amount of cleaning medium that is continuously discharged in the range of ultra-high pressure to high pressure within the range of 15 to -15 degrees toward the mounting surface, or an intermediate-pressure cleaning medium that is intermittently discharged in large quantities It is possible to remove dirt that is dry in a small amount or dirt that is sticky in a large amount by intermittent vibration cleaning with.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall view of a cleaning apparatus that performs a wire forming molding process as an example of a cleaning apparatus for a belt-shaped object to be cleaned according to the present invention. 1 is an overall view of a cleaning apparatus that performs a pressing step as an embodiment of a cleaning apparatus for a belt-shaped object to be cleaned according to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall view of a cleaning apparatus that performs a dryer process as an embodiment of a belt-type cleaning object cleaning apparatus according to the present invention. It is a side view of the washing | cleaning apparatus used for washing | cleaning of a cloth belt-shaped to-be-washed object. FIG. 5 is a cross-sectional view of the air venturi provided at the head cover air exhaust port of the cleaning device, showing a portion X in FIG. 4. It is a side view of the washing | cleaning apparatus used for washing | cleaning of a cloth belt-shaped to-be-washed object. It is a side view of the washing | cleaning apparatus used for washing | cleaning of the belt-shaped to-be-cleaned object made from blankets. It is a side view of a canvas cleaning apparatus used for cleaning a canvas belt object. It is a side view of the penetration type canvas washing device used for washing of a canvas belt thing to be washed. It is a perspective view of a 1st canvas cleaner. It is a fragmentary perspective view which shows the state which a 1st canvas cleaner reciprocates in the width direction of the canvas belt washing | cleaning thing at the time of washing | cleaning. It is a side view which shows the relationship between the 1st canvas cleaner which reciprocates to the width direction of the canvas belt thing to be cleaned at the time of washing | cleaning, and discharge | emission Toyo. It is explanatory drawing of the washing | cleaning method of a cloth belt to-be-washed | cleaned object. It is explanatory drawing of the cleaning method of the belt to-be-cleaned object made from canvas.

Explanation of symbols

2 Head cover 4 Opening 5 Air supply pipe 6 Air exhaust port 8 Air venturi 10 Socket 12 Discharge pipe 14 Compressed air outlet 15 and 16 Air supply pipe 18 Exhaust cylinder 20 Head cover 22 and 26 Exhaust toy 24 Scraper 28 Mist box 30 Exhaust toy 32 Guide Rail A Wire forming molding process B Pressing process B1 Top belt object to be cleaned (cloth belt object to be cleaned)
B2 Bottom belt object (cloth belt object)
B3 Top belt object to be cleaned (Blanket belt-shaped object to be cleaned)
B4 Bottom belt object to be cleaned (Blanket belt object)
B5 Canvas belt cleaning object C Dryer process CR1 Top power cleaner (cleaning device)
CR2 Bottom power cleaner (cleaning device)
CR3 Bottom power cleaner (cleaning device)
CR4 Bottom power cleaner (cleaning device)
CR5 Blanket cleaning cleaner (cleaning device)
CR6a 1st canvas cleaner (cleaning device)
CR6b 2nd canvas cleaner (cleaning device)
CR7 3rd canvas cleaner (cleaning device)
NZ1-5 Cleaning nozzle NZ4a High pressure cleaning nozzle NZ4b Medium pressure cleaning nozzle NZ5a High pressure cleaning nozzle NZ5b Medium pressure cleaning nozzle NZ6a High pressure cleaning nozzle NZ6b Medium pressure cleaning nozzle R1 Bottom drive roll R2 Top return roll R3 Bottom drive roll R4 Bottom return roll R5 Bottom Drive roll R6 Top return roll R7 Bottom drive roll R8 Bottom return roll R9 Roller R10 Roller group

Claims (7)

A belt-shaped object that removes dirt adhering to the object to be cleaned by injecting a cleaning medium from the cleaning nozzle NZ to the belt-shaped objects to be cleaned B1 to B5 that are continuously wound around a plurality of rolls R1 to R8. In the cleaning equipment for cleaning items,
The cleaning nozzles NZ are composed of a plurality of hood-like head covers 2 that are disposed in the hood-like head cover 2 that opens at the front end side close to the belt-shaped objects B1 to B5. The outlet is set within the range of 45 to -45 degrees in the radial direction toward the mounting surface with respect to the axial direction perpendicular to the mounting surface of the belt-shaped objects B1 to B5. An apparatus for cleaning a belt-like object to be cleaned. The head cover 2 is provided with a plurality of small-diameter air jets extending along the edge of the opening 4 toward the belt-like objects B1 to B5, and an air exhaust at the rear end side of the head cover 2. Mouth 6 is provided,
The opening 4 is hermetically sealed by an air curtain formed by the air ejected from the plurality of air jets, and the dirt removed from the belt-shaped objects B1 to B5 and the belt-shaped objects B1 to B5 are cleaned. 2. The apparatus for cleaning a belt-like object to be cleaned according to claim 1, wherein the cleaning medium sprayed on the belt is prevented from leaking to the outside. An air venturi 8 is provided in the vicinity of the air exhaust port 6 on the rear end side of the head cover 2, and the rear end of the air exhaust port 6 communicates with a discharge toyo that discharges the cleaning medium after cleaning to the outside.
On the inlet side of the air venturi 8, there is provided an air discharge port for blowing out compressed air toward the discharge port on the rear end side, and the negative air venturi 8 formed by the compressed air discharged from the air discharge port. The apparatus for cleaning a belt-like object to be cleaned according to claim 1 or 2, wherein the cleaning medium after cleaning sucked by pressure action is guided to the discharge toyo.   In the wire forming step A, the cleaning devices CR1 to CR4 for cleaning the cloth belt-like objects B1 and B2 are continuously discharged at a high pressure of 60 to 150 bar as the cleaning medium discharged from the discharge nozzles by the cleaning nozzles NZ1 and NZ2. The cleaning medium bounced into the head cover 20 from the belt-like objects to be cleaned B1 and B2 is guided to the discharge toyo 22. 4. The apparatus for cleaning a belt-like object to be cleaned according to any one of 3 above. In the pressing step B, the cleaning device CR5 that cleans the blanket belt-like objects B3, B4 is a plurality of cleaning media that the cleaning nozzle NZ3 discharges continuously from the discharge port at a medium pressure of 15-60 bar. Consists of
The belt according to any one of claims 1 to 3, wherein the cleaning medium bounced into the head cover 20 from the belt-like objects to be cleaned B3 and B4 made of a blanket is guided to the discharge toyo 22. Cleaning device for objects to be cleaned.   In the dryer process C, the cleaning device second canvas cleaner CR6b for cleaning the canvas-like belt-like object B5 made of canvas fabric has a continuous cleaning liquid discharged from the discharge port by the cleaning nozzle NZ at an ultrahigh pressure of 80 to 350 bar. A cleaning medium that is composed of a plurality of cleaning nozzles NZ6a to be discharged and a plurality of intermittent cleaning nozzles NZ6b to be intermittently discharged and bounces back into the head cover 20 from a belt-like cleaning object B5 made of canvas fabric. The apparatus for cleaning a belt-shaped object to be cleaned according to any one of claims 1 to 3, wherein the cleaning apparatus is configured to guide the discharge to the discharge toyo (26). The cleaning medium is sprayed from the cleaning nozzle NZ to the belt-like objects to be cleaned B1 to B5 that are continuously wound around the plurality of rolls R1 to R8 to remove the dirt adhered to the objects to be cleaned B1 to B5. In the method for cleaning belt-shaped objects,
Each discharge port of the plurality of cleaning nozzles NZ surrounded by a hood-like head cover 2 that opens at the front end side close to the belt-shaped objects B1 to B5 opens to the belt-shaped objects B1 to B1. The head cover 2 is set along the edge of the opening 4 along the edge of the opening 4 while being set within a range of 45 ° to −45 ° in the axial direction perpendicular to the mounting surface of B5 and in the radial direction with respect to the axial line. A plurality of small-diameter air jets facing the object to be cleaned are connected,
The cleaning medium ejected from the discharge ports of the plurality of cleaning nozzles NZ is removed from the belt-shaped objects B1 to B5 and stored in the head cover 2, and the jetted cleaning medium is the air The air curtain formed by the air jetted from the jet outlet seals the gap between the opening 4 and the belt-like objects B1 to B5, and the air installed in the air exhaust port on the rear end side of the head cover 2 A method for cleaning a belt-like object to be cleaned, wherein the venturi 8 is discharged to a discharge toyo through the air exhaust port by the suction action of the venturi 8.

Images